London, October 9 : Welsh singer Dame Shirley Bassey left former Sir Paul McCartney red-faced by passing a comment about his rear during a Q Magazine photoshoot recently.

Sources have revealed that the two music legends embraced and wished each other hello.

A moment later Bassey let it slip that McCartney had a “nice ass”, leaving him speechless.

"Dame Shirley made a beeline for Macca and the pair embraced and said their hellos,” the Mirror quoted a source as saying.

"But Dame Shirley left Macca speechless when she looked at his behind, gave an approving nod and said 'nice ass'. Dame Shirley was howling with laughter while Macca looked a little sheepish," the source added.

McCartney paid a tribute to his wife Linda when he picked up the Q Icon award.

"I thank Linda for seeing me through some real tough periods. Thanks also for my fantastic, beautiful children," he said.

He, however, did not mention his second wife Heather Mills. (ANI)